Application of Zr/Ti-PILC in the adsorption process of Cu(II), Co(II) and Ni(II) using adsorption physico-chemical models and thermodinamics of the process

Quimica nova

Airoldi, Claudio¹  Guerra, Denis Lima¹  Viana, Rúbia Ribeiro²  Angélica, Rômulo Simões³  Lemos, Vanda Porpino³ 

[1] Universidade Estadual de Campinas, Campinas, Brasil;Universidade Federal do Mato Grosso, Cuiabá, Brasil;Universidade Federal do Pará, Belém, Brasil

关键词: adsorption isotherms;    metals;    Zr/Ti -pillared clay.;   

DOI  :  10.1590/S0100-40422008000200031

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

The aim of this investigation is to study howZr/Ti-PILC adsorbs metals. The physico-chemical proprieties of Zr/Ti-PILC havebeen optimized with pillarization processes and Cu(II), Ni(II) and Co(II) adsorptionfrom aqueous solution has been carried out, with maximum adsorption values of8.85, 8.30 and 7.78 x10-1mmol g-1, respectively. TheLangmuir, Freundlich and Temkin adsorption isotherm models have been appliedto fit the experimental data with a linear regression process. The energeticeffect caused by metal interaction was determined through calorimetric titrationat the solid-liquid interface and gave a net thermal effect that enabled thecalculation of the exothermic values and the equilibrium constant.

【 授权许可】

CC BY